Commitments and Contingencies Personal Injury (Details) - Personal Injury - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Loss Contingency Accrual [Roll Forward]
Beginning balance	$ 264	$ 263
Accruals / changes in estimates	75	59
Payments	(89)	(74)
Ending balance	250	248
Current portion of ending balance	85	$ 90
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	205
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 320